Field



(NoMo'del.)

'J. D.'SOHOFIELD.

ADJUSTABLE GU'LTIVATOR TOOTH SEAT.

No. 605,140. Patented June 7, 1898'.

, v3 )mmm f mvENToH'v WITN ESSES I UNITED Y STATES PATENT OFFICE.

JAMES D'EU'MMOND 'S'cHoFIE'Ln AoF DALLAS, TEXAS, ASSIGNOE To rrI-IE TEXAS IMPLEMENT AND MACHINE COMPANY, oF SAME PLACE.

SPECIFCATION forming part of "Letters Patent-NO. 605,140', dated'J' une 7, 1898. Application iiled October Z8, 1il9'1. Serial No. 656,696. (No model.)

To all whoml it mayconcert:

Be it known that LJ AMES DRUMMOND SCIIoat Dallas, in the county of Dallas and State of Texas, have invented certain new and 'useful Improvements in Adjustable Cultivator- Tooth Seats; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable oth'- ers skilled in the art to which it appertains to make and use the same. ,Y -My invention relates to improvements in cultivator-tooth fasten ings, the object in view being to so construct the ordinary clutch cultivator-tooth'fastener as to permit of a radial adjustment of the same upon the cultivatorbeam, whereby said fastener is adapted to receive and support ina vertical manner the Shanks of Various styles of cultivator-teeth. With this main object in view my invention consists in providing' the yokecasting of the tooth-fastening with a verticallyelongated bolt-opening, whereby said'v casting may be ,moved to a degreeW and in a circumferential line about the cultivator-beam, and,v further more, in providing ya `convenientmeans of locking the said casting upon'the cultivatorbeam at any point of itscircumferential adjustment, vso as to adapt the fastening as a whole to the disposition of the shank of the cultivator-tooth. A

Referring to the drawings, Figure l is a side elevation of a cultivator-tooth fastening constructed in accordance with my invention and arranged in operative -position upon a cultivator-beam. Fig.V 2 is a vertical transverse sectional view through the same, the

cultivator-tooth shank being removed. Fig.;` 3 is an elevation of the yoke-casting comprised Fig. 4 comprises details'inj` rear view and side elevation of thelocking*- in the fastening.

Washer.

Like numerals of reference indicatelike' parts in all the gures of the drawings.

As the cultivator-tooth" fasteningin connection with which-my, invention is illustrated is but vone of the many; forms of wellknown devices for this purpose and-forms no part of mypinventioma brief description of the same will be sufficient, it being understood that the invention hereinafter referred to `may aswell be applied to any of the ordinary'style's of cultivator-tooth fastenin gs in general use as to the one which I have selected and which'is herein illustrated and described.

(illustrated in vdetail in Fig. 3) and an outer =pivotaltooth-supporting casting 2.

. AThe yoke-casting l comprises a semicylindrical or concaved seat 3, designed to em- .brace in the present instance a cylindrical cultivator-beam 4, and upper and lower verntically-alining plates or wings 5 and 6, re-

spectively. These wings are offset from the `concaved seat of the yoke-casting, so that between the twowings 5 and 6 there is formed a cavity 7. Pvoted on the lower wing 6 by means of an eyebolt 8 is the tooth-supporting casting 2, hereinbefore mentioned, the same having formed at its lower end the iianged tooth-seat '9- for the reception of the 'shank 10 o'f4 the cultivator-tooth. It will be obvious that by passing the shank 10 of the tooth through the eyebolt 8 the nut 11 of said -boltvkmay be run down upon the same, and lthus cause the said shank to be drawn snugly lby moving it to the front it will tighten said bolt, whereby it may be secured at any point of its adjustment in the slot 14.

The only essential feature contained in the foregoing description is the concaved seat 3,

that embraces the beam 4,..l Any other'tooth- "fastening having this Yfeature. may b e provided with the improvements to-be described.

l It is usual to provide the yoke-casting 1 at its seat 3 with a'pcircular or square bolt-hole, the same being of such size as to iit the'bolt 18, which is passed through corresponding bolt-holes 19, formed in the beam 4 and in a The tooth-fastening herein shown is what vis knownuastlie friction-clutch fastener,A fand it comprises an inner yoke-casting -1 roc rear clamping-plate 20. In the present instance, however, in lieu of such bolt-hole being formed in the seat 3 I form a verticallyelongated oblong opening 2l, which exceeds in length the diameter of the bolt, and hence will permit of a limited circumferential movement of the tooth-fastening as a whole. The front surface of the seat 3, or what may be more properly termed the bottom of the cavity 7, is, immediately surrounding the opening 21, provided with a raised annular toothed portion or su rfaee 22, which is curved concentrically with the seat 3. Interposed between the head 23 of the bolt and the aforesaid toothed surfaee 22 is the locking-washer 2i. This washer is provided with a square opening 25, has its inner side concaved to conform with the toothed surface 22, and, like said surface, is provided with transverse teeth 2t', designed to interlock therewith at any point of its annular adjustment thereon.

3y loosening the nut 2O of the bolt 1S it will be observed that the teeth of the washer 2l will but loosely engage with the toothed surface 23 of the yoke-casting, and it will be seen that this will permit of a rotary movement upon the part of the tooth-fastener, whereby the cultivator-tooth may be brought to a vertical position, and by a subsequent tightening of the nut 20 the bolt-head 23 will serve to draw or force the washer 2-linto locking engagement with the teeth 22, and thereby resecnre the tooth-fastener as a whole upon the beam.

From the foregoing it will be seen that I have produced a very simple and inexpensive improvement to be applied to the usual toothfastener, whereby cultivator-teeth having diff erently-disposed shanks may be properly adjusted in position and secured.

IIaving described my invention, what I claim is- I. The combination with a cylindrical cultivator-beam, of a tooth-fastening having a concaved seat fitting said beam, the seat of said fastening being provided with an elongated opening, a bolt passed through the beam and the opening and of less diameter than the length of the opening, and a clampingwasher interposed between the head of the bolt and that portion of the tooth-fastener surrounding the elongated opening.

2. The combination with a cylindrical cultivator-bean1,of a cultivator-tooth seat mounted and adapted for circumferential adjustment thereon, and means for securing the said tootlrseat at any point of its said eircnmferential adjustment.

3. The combination with a eultivator-beani cylindrical in cross-section, of a tooth-fastener having a concaved seat fitting the beam and provided with a vertically elongated opening having a raised toothed surrounding surface and alining with smaller, transverse openings formed in the beam, a bolt passing through the openings in the beam and fastener and having a diameter less than the length of the opening in the latter, a nut on the rear end of the bolt and a concaved,toothed washer having an opening fitting the bolt and designed to interlock with the teeth surrounding the opening in the fastener and interposed between the head of the bolt and the fastener.

In testimony whereof I affix my signature in presence of two witnesses.

JMIES l) liUill HOND Stllltllllll'l).

lVitnesses:

E. G. EIsnNLoHR, J. O. ILmnEnLiN. 

